--- a/src/internet/model/ipv4-l3-protocol.h	Wed Dec 11 10:00:06 2013 +0100
+++ b/src/internet/model/ipv4-l3-protocol.h	Wed Dec 11 10:03:06 2013 +0100
@@ -98,9 +98,8 @@
     DROP_BAD_CHECKSUM,   /**< Bad checksum */
     DROP_INTERFACE_DOWN,   /**< Interface is down so can not send packet */
     DROP_ROUTE_ERROR,   /**< Route error */
-    DROP_FRAGMENT_TIMEOUT, /**< Fragment timeout exceeded */
-    DROP_MTU_TOO_LITTLE, /**< MTU (or PMTU) lower than minimum */
- };
+    DROP_FRAGMENT_TIMEOUT /**< Fragment timeout exceeded */
+  };
 
   /**
    * \brief Set node associated with this stack.